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How To Compress Video Without Losing Quality (Reduce Video File Size) With FFMPEG

Transcribed Jun 14, 2026 Watch on YouTube ↗
Beginner 1 min read For: Anyone looking to compress video files using a free command-line tool.
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AI Summary

This video demonstrates how to compress a video file using FFmpeg, reducing its size from 28 MB to 6 MB without noticeable quality loss. The process is fast and uses a simple command line.

[00:09]
Goal

Reduce video file size without losing quality using FFmpeg.

[00:17]
Input file

Input file (input.mp4) is over 28 MB.

[00:44]
Command

Use command: ffmpeg -i input.mp4 -c:v libx264 -crf 30 output.mp4

[01:42]
Result

Output file is a little over 6 MB, a significant reduction.

FFmpeg can effectively compress videos with minimal quality loss, as shown by the reduction from 28 MB to 6 MB.

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Mentioned in this Video

Tutorial Checklist

1 00:38 Open a command prompt window.
2 00:44 Run command: ffmpeg -i input.mp4 -c:v libx264 -crf 30 output.mp4
3 01:42 Wait for compression to complete; output file is created.

Study Flashcards (3)

What command is used to compress a video with FFmpeg?

easy Click to reveal answer

ffmpeg -i input.mp4 -c:v libx264 -crf 30 output.mp4

00:44

What does the -crf flag control in FFmpeg?

medium Click to reveal answer

It controls the quality; lower values give higher quality, higher values give more compression.

00:44

What was the original file size and the compressed file size in the example?

easy Click to reveal answer

Original: over 28 MB; compressed: a little over 6 MB.

01:42

💡 Key Takeaways

💡

Goal of video

Clearly states the objective: reduce video size without quality loss.

00:09
🔧

FFmpeg command

Provides the exact command to achieve compression.

00:44
📊

Compression result

Demonstrates a significant size reduction from 28 MB to 6 MB.

01:42

✂️ Creator Tools: Viral Hooks

AI-generated clip ideas for Shorts based on the transcript

Reduce video size 80% with one command

36s

Shows a dramatic file size reduction from 28 MB to 6 MB, sparking curiosity about the simple FFmpeg command.

▶ Play Clip

FFmpeg command to compress video

60s

Reveals the exact FFmpeg command with CRF parameter, providing actionable value for viewers.

▶ Play Clip

[00:03] [music]

[00:06] Hello my viewers and channel followers.

[00:09] Today I will show you how to reduce

[00:10] video file size without losing video

[00:12] quality. I will use peg to compress

[00:15] videos for free and fast. FPEG is a free

[00:17] tool and very popular. I have an

[00:19] input.mpp4 file that is over 28 MB in

[00:22] size. I will try to reduce this file

[00:25] today and show you the final result.

[00:27] This is a quick way to reduce the size

[00:29] of a video file with a simple command.

[00:31] Also, the process is much faster than

[00:34] with other video tools I've worked with

[00:36] before. First, I will need to open a

[00:38] command prompt window through which I

[00:40] will call the FPEG program specifying

[00:42] the necessary command parameters.

[00:44] Next, you need to call the FPG program

[00:47] and specify the following parameters.

[00:49] FPEG input.mpp4 CVIX264

[00:52] CRF30 output.mpp4 MP4.

[01:42] Next, the video compression process is

[01:45] complete and the output.mpp4 file is

[01:47] created. The output.mpp4 file size is a

[01:51] little over 6 MB, but the original input

[01:53] file was over 28 MB. As you can see,

[01:56] there is a big difference.

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